refactor(exchanges): update test configurations and enhance ws client…

[Praying]

… functionality

• Remove unused Decimal import from binance advanced market data tests
• Add deprecated attribute allowances to OHLCV test functions across multiple test files
• Remove unused create_test_binance function from binance my trades test
• Remove unused SecretString imports from property tests
• Add optional fields to Market struct initialization in property tests
• Replace direct market cache access with getter methods in bitget property tests
• Update deprecated method calls to use new getter methods in bitget property tests
• Add #[allow(deprecated)] to various test functions to suppress warnings
• Remove unused HyperLiquid import from hyperliquid integration test
• Conditionally apply deprecated attribute to exchange module outside test builds
• Add custom message builder functionality to ws client for flexible subscription handling
• Implement Binance-specific message builders with atomic request ID tracking
• Extract Binance subscribe/unsubscribe payload construction into dedicated functions
• Add unit tests for Binance payload construction functions
• Add deprecated attribute allowance to timestamp test functions
• Remove unused Amount import from OKX/Bybit shared property test